Along with intense feelings of release following an orgasm,
come feelings of happiness and blissful exhaustion. Some
couples laugh with joy, and this is the moment for whispering,
“I love you.”

The main reason this sexual
experience is sought over and over again is that it is
such fun.

And as far as men go it serves a clear-cut purpose: as American
neuro-psychiatrist Louann Brizendine writes in her
book The Female Brain, the more often a man sows
his seed, the greater the chance of passing down his genes to
future generations.

So why is there such a thing as a female orgasm? Women can
after all conceive without one. Gynecologist Johannes Huber, a
specialist in reproductive medicine speaking at a conference
on sexuality in
Salzburg, says that female orgasm is helpful to conception.
With researchers at the University of Vienna, he has shown that
female orgasms lead to the release of high amounts of the
neurotransmitter oxytocin.

For one thing, the neurotransmitter effects muscle
contractibility on the pelvic floor. For another, large amounts
of oxytocin increase concentration of the luteinizing hormone
(LH) that causes ovulation. "When a woman near ovulation has an
orgasm it triggers ovulation. So female orgasm is helpful to
conception,” Dr. Huber says.